Molding



26, 1930. HlNEs 1,773,732

I MOLDING Filed p l 1925 3 Sheets-Sheet 2 Eigf) EJ'amw/i) zzzef J Aug.26, 1930. J IF H|NE5 1,773,732

MOLDING Filed April 10, 1925 3 Sheets-Sheet 3 3 James R Hines PatentedAug. 26, 1930 JAMES F. mans, or ILAKEwoon, 01110 MOLDING Applicationfiled April 10',

My invention relates to molding and the" principal object of myinvention is to provide new and improved methods of molding and new andimproved apparatus for carrying out these methods. In the drawingsaccompanying this specification and forming a part thereof I have shown,for purposes of il- 20 mold has been formed,

Figures 6 and 7 are fragmentary sections similar to Figures 4 and butillustrating an alternative method,

Figures 8 and 9 arefragmentary sections third method, while v Figure 10illustrates one use of the molds produced in accordance withthe methodof 3 Figures 8 and 9.

through 5 comprises a frame 50 consisting of two pairs of legs connectedby means of two rails 21 each carrying over at least the central portionof its upper face an undulating track 22 on which ride the wheels23 of acar 24 arranged to be oscillated along the track 22 by means of a lever25 pivotally mounted at 26 in the rails 21 and provided intermediate therails 21 with an offset portion 27 to which is secured one end of a link28 secured at its other end to a bracket 29 depending from the adjacentend of the car 24. Beneath the rails 21 is a cooperating car 30,provided with wheels 31 riding upon the lowto Figure 4 illustrating theparts after'the J similar'to Figures 4 and 5 but illustrating a Theapparatus disclosed in Figures 1 1925. Serial lil'o. 22,064.

er faces of'the rails 21- and rotatably mounted on axles 51 carried inthe frame of the car 30, and said car 30 is connected to the car 24 by aconnection arranged to hold the car 24 to the track 22 while permittingthe variation in the distance betweenthe cars necessitated by theundulations in the'track 22. This c0nnection is shown hereinascomprising a pair of rods-32 having their upper ends secured to the car24 and their lower ends extending through apertures 52 in enlargements53 formed on the axles '51, and said rods terminate in polygonal heads34 between which and the enlargements 53 are compression springs 33constantly pressing the rods 32 6O downwardly and therefore constantlyholding thecar 24 in engagement with the track 22. i

The two side rails of the car 24 are provided with Tr-slots 36 arrangedto receive the heads 37 of studs 35 secured to the lower face of apattern plate 38 on the upper face of which appears the pattern 39 whichis to be reproduced in the mold. Also projecting from the upper face ofthe pattern plate 38 are a pair of pins 40 arranged to cooperatewithlugs 41 on the flask section 42 to register the flask section 42with the pattern plate 38, while projecting upwardly from the flasksection 42 are similar pins 43 arranged to mg f with the flasksection42'both the extension 45 and the-weighted section 47.

In use, the apparatus, except for the weighted plate 47, is assembled asshown in Figures 3 and 4, the flask section 42 and extension 45 arefilled with-sand to the top of the extension 45, the height of which hasbeen properly calculated to give the amount of sand desired, theweighted-plate 47 is placed in positiom'and the handle 25 is operated togo move the car 24 back and forth along the track 22 to verticallyoscillate, because of the undulations of the track 22, the car 24 andeverything carried thereby, and, in this manner, to cause the weightedplate 47 to continue to pack the sand until the plate 47 has reached itslimit of movement in that position shown in Figure 5 where its lowersurface is flush with the bottom of the extension 45, the upper face ofthe mold section is flush with the top of the flask section 42, and themold section is completely formed within the flask section42.

Thereafter the extension 45 and weighted plate 47 are removed from theflask section 42 and the flask section 42 is removed from the patternplate 38 and assembled with a cooperating flask section containing acooperating mold section which may have been formed in exactly the samemanner.

On'the other hand, formation of both mold sections in this mannernecessitates rolling over the drag section, something which is at timesquite undesirable. Under such circumstances I may form the drag sectionby the method indicated in Figures 6 and 7 wherein the extension 45 andflask section 42 are assembled on a blank plate 48 in the same mannerbut the sand is compacted by a weighted plate 49 which differs from theweighted plate 47in that it substitutes for the plain lower face of theweighted plate 47 a face Whereon is mounted the drag half of thepattern. In operation, the car is again moved to produce the desiredvertical oscillation of the parts to cause the weighted plate 49 totravel from the "position shown in Figure 6 to the limit of its movementas shown in Figure 7, whereupon there is produced a mold section lyingentirely within the flask section 42 and with its upper face flush withthe upper edge of the flask section 42 and containing the configurationcorresponding to the drag section of the pattern.

On the other hand, I may utilize both of these methods of molding at thesame time to produce in a single mold section both a dragsection and acope section. In such case I may arrange the apparatus as shown in Figures 8 and 9 wherein the flask 42 and extension 45 are assembled onthe pattern plate 38 used in forming the mold section in themethodillustrated in Figures 3 through 5 and the sand is compacted bythe pattern carrying plate 49 used informing the mold section in themethod shown in Figures 6 and 7, and the apparatus is then oscillated tocompact the sand and move the parts from the position shown in Figure 8to that shown in Figure 9, whereby there is produced a mold lyingentirely within the flask section 42, and carrying on its lower face acope mold section and on its upper face a drag mold section.

I may then utilize this combination mold I in the manner shown in Figure10 wherein a plurality of these mold sections are arranged in a verticalstack with the cavities all connected to a common sprue so that theentire series may be poured in one operation.

It will be obvious to those skilled in the art that I have disclosed newand improved methods of molding and also new and improved apparatusparticularly designed for carrying out these methods. It will also beapparent to those skilled in the art that these methods and apparatuspossess a large number of advantages other than those particularlypointed out or suggested herein and also that these methods andapparatus may be variously combined with other methods and apparatus andalso variously changed and modified all without departing from thespirit of, my invention or sacrificing the advantages thereof. It willtherefore be understood that the disclosure herein is purelyillustrative and that my invention is in no wise limited thereto.

I claim:

1. In combination, a flask section, a pattern cooperatingtherewith, andmeans for laterally oscillating and vertically reciprocating said flasksection and said pattern to compact the sand within said flask sectioninto a mold reproducing said pattern.

2. In combination, a flask section open at the top, a pattern arrangedabove said flask section facing downwardly, and means for laterallyoscillating and vertically reciprocating said flask section and saidpattern to compact the sand within said flask section into an upwardlyfacing mold reproducing said pattern.

3. In combination, a flask section open at the bottom and the top, alower pattern arranged below said flask section facing upwardly, anupper pattern arranged above said flask section facing downwardly, andmeans for laterally oscillating and vertically reciprocating said flasksection and said pattern to compact the sand within said flask sectioninto a mold comprising a downwardly facing section reproducing saidlower pattern and an upwardly facing section reproducing said upperpattern. I

4. In combination, pattern means, flask means cooperating therewith, acar supportingboth said means, an undulating track supporting said car,and means for moving said car along said track to oscillate said car tocompact the sand within said flask means into a mold reproducing saidpattern means.

5. The method of forming sand into a mold which comprises assembling thesand within a flask section in operative relation to a pattern, and thenoscillating the same.

6. The method of forming a drag section of a mold which comprisesimprinting a pattern into the sand from above by bringing said patterninto contact with the upper surface of the sand and then laterallyoscillating and vertically reciprocating the mold container and saidpattern. 7

7. The method of forming a drag section and a cope sectionsimultaneously into a sin gle mold section which comprisessimultaneously imprinting the cope pattern into the sand from below andthe dragpattern into the sand from above by laterally oscillating andvertically reciprocating the mold container 10 and said patterns.

In testimony whereof I hereunto aflix my signature.

JAMES F. HINES.

